摘要:
A NOR type flash memory includes a plurality of word lines, a plurality of bit lines, at least one bit line, a plurality of nonvolatile memory cells, a row decoder, a cell selection circuit and a programming load. Each of the plurality of nonvolatile memory cells includes a gate electrode, drain electrode and source electrode and the gate electrode is connected to a corresponding one of the plurality of word lines, the drain electrode is connected to a corresponding one of the plurality of bit lines and the source electrode is connected to the source line. The row decoder selects one of the plurality of word lines at the time of data programming. The cell selection circuit includes a column decoder and column gates and is constructed to simultaneously select one bit line from each of the plurality of groups among the plurality of bit lines. The programming load increases the number of programming bits with the progress of programming when data of plural bits is programmed into a plurality of memory cells simultaneously selected by the cell selection circuit.
摘要:
A NOR type flash memory includes a plurality of word lines, a plurality of bit lines, at least one bit line, a plurality of nonvolatile memory cells, a row decoder, a cell selection circuit and a programming load. Each of the plurality of nonvolatile memory cells includes a gate electrode, drain electrode and source electrode and the gate electrode is connected to a corresponding one of the plurality of word lines, the drain electrode is connected to a corresponding one of the plurality of bit lines and the source electrode is connected to the source line. The row decoder selects one of the plurality of word lines at the time of data programming. The cell selection circuit includes a column decoder and column gates and is constructed to simultaneously select one bit line from each of the plurality of groups among the plurality of bit lines. The programming load increases the number of programming bits with the progress of programming when data of plural bits is programmed into a plurality of memory cells simultaneously selected by the cell selection circuit.
摘要:
Here is disclosed a controller for operation of transmission in motor car comprising a control cable (14) of triple structure consisting of an outer tube (15), an inner tube (16) slidably inserted into the outer tube (15) and a length of wire (17) slidably inserted into the inner tube (16), characterized by that any one end of the outer tube (15) is fixed to a car body, one end of any one of the inner tube (16) and the wire (17) is engaged with a SELECT mode operating mechanism provided adjacent a control lever (6) while one end of the other one of the inner tube (16) and the wire (17) is engaged with a SHIFT mode operating mechanism also provided adjacent the control lever (6), the other end of the outer tube (15) is fixed to a transmission casing, the other end of any one of the inner tube (16) and the wire (17) is engaged with a SELECT mode operating mechanism provided adjacent a transmission unit while the other end of the other one of the inner tube (16) and the wire (17) is engaged with a SHIFT mode operating mechanism provided adjacent the transmission unit.
摘要:
A method for manufacturing a floating gate field effect transistor includes the steps of forming a plurality of first band-like insulating films over a semiconductor substrate in a parallel, spaced-apart relation and a second insulating film between the first insulating films and having a thickness smaller than that of the first insulating film, forming a plurality of first conductive layers selectively over the insulating layer and a plurality of second band-like conductive layers over the first conductive layers in a spaced-apart relation and in a direction perpendicular to the first and second insulating films, the first conductive layer having a width substantially the same as that of the second conductive layer, coating a first resist over a whole surface of a resultant structure and patterning it so as to protect a substantive source region, removing the first insulating film at those areas not covered by the first resist, removing the first resist, forming a third insulating film by a thermal oxidation, and implanting an impurity ion into an element formation area in the semiconductor substrate in a self-aligned relation to the source region of a first conductivity type and forming a first impurity region, the conductivity type of the impurity being opposite to that of the substrate.
摘要:
The present invention provides a method of manufacturing a nonvolatile semiconductor memory device. In the method of the present invention. Arsenic ions are implanted into an element region of a silicon substrate so as to form a first impurity region. Then, an insulating film is formed on the silicon substrate in the element region, followed by forming a heat resistant film on the entire surface of the silicon substrate. Further, a resist film is formed on the silicon substrate, followed by patterning the resist film to form an opening on at least the first impurity region. After the patterning step, the heat resistant film positioned below the opening of the resist film is removed, followed by implanting phosphorus ions into the substrate using the patterned resist film as a mask so as to form a second impurity region. In the next step, the resist film is removed and, then, annealing is applied with the heat resistant film used as a mask. After the annealing step, the resist film is removed, and an annealing is performed with the heat resistant film used as a mask, followed by removing the insulating film using the heat resistant film as a mask. Finally, a tunnel oxide film is formed on that portion of the silicon substrate, followed by forming an electrode on the tunnel oxide film so as to manufacture a desired nonvolatile semiconductor memory device.
摘要:
For a system such as a combinational weighing system that requires a large number of parameters to be set for its operation, groups of parameters which frequently assume same sets of values are identified and each of such sets is assigned a reservation number. Memory space for storing values assumed by the parameters can be reduced if these values are grouped by such frequently occurring combinations and the user specifies a single reservation number instead of specifying values of the individual parameters. Selection of operating condition is effected by an input device with a touch screen. For some parameters, currently set values are displayed as a bar graph and a user can set or reset a value directly on the screen by moving a cursor on the bar graph.
摘要:
In a method of applying a voltage pulse for injecting/extracting electrons into/from a non-volatile semiconductor memory in which high and low levels of a threshold voltage corresponding to presence and absence of storage of electrons are caused to correspond to binary information, the method includes the steps of generating a plurality of voltage pulses each having an ability of injecting or extracting only a portion of all electrons to be stored, and applying the plurality of voltage pulses to the non-volatile semiconductor memory to thereby carry out injection/extraction of all the electrons.
摘要:
For a system such as a combinational weighing system that requires a large number of parameters to be set for its operation, groups of parameters which frequently assume same sets of values are identified and each of such sets is assigned a reservation number. Memory space for storing values assumed by the parameters can be reduced if these values are grouped by such frequently occurring combinations and the user specifies a single reservation number instead of specifying values of the individual parameters. Selection of operating condition is effected by an input device with a touch screen. For some parameters, currently set values are displayed as a bar graph and a user can set or reset a value directly on the screen by moving a cursor on the bar graph. Operating conditions can be changed in each cycle of the combinational calculation without stopping the overall operation of the system.
摘要:
A combinatorial weighing method for combinatorially weighing out articles supplied to a plurality of weighing machines includes the step of making a comparison between a predetermined percentage of a set target weight value and a sum total of weight values from weighing machines that have participated in a combinatorial weighing operation. This step is performed when an optimum combination is not obtained through a combinatorial calculation. Based on the results of the comparison, weighing machines indicating comparatively low weight values are supplied with additional articles. In another embodiment, the combinatorial weighing method includes the steps of executing combinatorial weighing using a number of weighing machines greater than a prescribed number, deciding on the basis of the sum total of the weight values from weighing machines that have participated in the combinatorial weighing operation whether to perform a combinatorial calculation one or more times, and changing over automatically between high-speed, low-capacity processing and low-speed, high-capacity processing in dependence upon the amount of articles supplied.
摘要:
In a multi-mode exposure control device for a photographic camera which automatically controls camera exposure in any desired one of diaphragm aperture priority mode, shutter speed priority mode and program mode, the selection of the exposure control mode as well as the setting of the exposure parameter to be manually determined are effected by manual operation of a single one of a plurality of manual members. A signal selector circuit receives three pairs of diaphragm control and shutter control signals for the three exposure control modes, and selects one of the pairs depending on the last operated one of diaphragm aperture setting, shutter speed setting and program mode selecting manual members. The selected pair of diaphragm control signal and shutter control signal are respectively supplied to diaphragm and shutter control circuits as well as to display devices.